New 1980 Ski Nautique

So i just picked up a SN a couple of weeks ago, figured this boat would be better than the bayliner i always had to bum a pull in, with a crappy driver who never listened about not powerturning, or driving in a straight line. So i finaly said screw it and bought this boat locally for a pretty decent price I think. Came with a homemade tower on it thats real sturdy too. ANyways i figure it should be good for the next couple of summers until i can afford to get a newer vdrive wakeboarding boat.

Worst part of my story is I broke my foot in a nonwakeboarding accident, stupid really, so i havent even been able to ride behind the boat yet! killing me watching some pretty decent riders ask me for a pull and then watching them do some impressive tantrums way out into the flats and one guy even landed his first 7 behind it. Its not the best boat out there by a long shot, but it should do me pretty well to advance my riding alot more than the 3 times a month i was able to nag the bayliner guys to go out and pull me.

So having said that. Does anyone have this boat? I am wanting to get some more weight into this bad boy to make it the best i can. What should i put in it for fat sacks? Ive had it loaded with people and gear so far and it makes a pretty decent wake, better than the riders could handle on that day anyways, i was choked i couldnt go out and use that haha. I'm not sure i would want to put much more weight in it anyways when i have that many people in the boat. Plus i'm not sure id have the space to even put sacs in when i have that many ppl,
What i am thinking is some on either side of the engine doghouse, then maybe one across the back where my bench is. I would like to put some up front to mellow that steep wake up a bit but i think im super limited for space under the bow. If anyone has a system for these kind of nautiques i would love to see.
Also Which prop should i look at for the boat? while the prop i have has no problem pulling people out of the water, when its loaded down it has problems maintaining a steady speed. Now alot of that is because most people in my crew are beginners and are scared to go the speeds required for the wake to be clean(22-24) but even when loaded down i feel when i start riding again at those speeds my driver will have some minor issues. i'm not sure what i have on it now, I will find out tommorrow, It is a 4 blade thats been fixed at least once i can tell by looking at it haha. anyways, thanks for any ideas anyone might have. Cant wait to shred it up and take pics for anyone interested!